In this article, a physico-mathematical model of external forces related to reducing
the static load of the body of workers and people who use video terminals or computer monitors in
a sitting position is developed. Reducing the load on the muscles of the human musculoskeletal
system associated with the position of the body allows users of video terminals or computer
monitors to dramatically reduce the static load in a sitting position. Therefore, in order to bring the
torso position that users of video terminals or computer monitors take for a long time, it is
necessary to ensure the balance of the reaction forces of the biolink of the musculoskeletal system
of the human body sitting on the chair and the reaction forces of the chair parts. Based on the
developed models, a theoretical analysis was carried out, the equations of the equilibrium
conditions of the forces in the physical model made it possible to create a mathematical model. By
analyzing the created mathematical model, the minimum contraction force of the human
musculoskeletal system, that is, the conditions of the muscles involved in maintaining the posture
of workers and people during work during the sitting position, was determined. The conditions
obtained on the basis of the specified mathematical model are used in the development of the
model of the course layout, which allows to ensure the "neutral position" of the human body and
calculate the values of the design parameters.
In this article, a physico-mathematical model of external forces related to reducing
the static load of the body of workers and people who use video terminals or computer monitors in
a sitting position is developed. Reducing the load on the muscles of the human musculoskeletal
system associated with the position of the body allows users of video terminals or computer
monitors to dramatically reduce the static load in a sitting position. Therefore, in order to bring the
torso position that users of video terminals or computer monitors take for a long time, it is
necessary to ensure the balance of the reaction forces of the biolink of the musculoskeletal system
of the human body sitting on the chair and the reaction forces of the chair parts. Based on the
developed models, a theoretical analysis was carried out, the equations of the equilibrium
conditions of the forces in the physical model made it possible to create a mathematical model. By
analyzing the created mathematical model, the minimum contraction force of the human
musculoskeletal system, that is, the conditions of the muscles involved in maintaining the posture
of workers and people during work during the sitting position, was determined. The conditions
obtained on the basis of the specified mathematical model are used in the development of the
model of the course layout, which allows to ensure the "neutral position" of the human body and
calculate the values of the design parameters.
| № | Имя автора | Должность | Наименование организации |
|---|---|---|---|
| 1 | Sulaymanov s.. | teacher | 1Tashkent State Transport University |
| 2 | Kamilov K.. | researcher | Тashkent State Transport University |
| № | Название ссылки |
|---|---|
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| 2 | S.S. Sulaymanov., Kh.M. Kamilov. Analysis of video monitoring of results of labor activities of train dispatcher (as a traffic dispatcher of the single dispatch center of the joint-stock company "Uzbekistan temir yollari". “Journal of Tashkent Institute of Railway Engineers”, 2019. 198. |
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| 8 | N.A. Nosko. Study of the formation of the human vertebral column. “Physical education of various population groups, physical rehabilitation, health and therapeutic physical culture”, 2002. 53. |
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| 10 | A.S. Aruin., V.M. Zatsiorsky. Ergonomic biomechanics.”Mechanical engineering”, 1989. 60. ISBN 5-217-00509-2. |
| 11 | K. Kremer., D. Chaffin., M. Ayoub. The human factor. In 6 t. t. 5. “Ergonomic fundamentals of workplace design: Translated from English”, 1992. 43. |